1255849 has 4 divisors (see below), whose sum is σ = 1435264. Its totient is φ = 1076436.

The previous prime is 1255847. The next prime is 1255861. The reversal of 1255849 is 9485521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9485521 = 397 ⋅23893.

It is a cyclic number.

It is not a de Polignac number, because 1255849 - 2¹ = 1255847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89697 + ... + 89710.

It is an arithmetic number, because the mean of its divisors is an integer number (358816).

2^1255849 is an apocalyptic number.

It is an amenable number.

1255849 is a deficient number, since it is larger than the sum of its proper divisors (179415).

1255849 is an equidigital number, since it uses as much as digits as its factorization.

1255849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179414.

The product of its digits is 14400, while the sum is 34.

The square root of 1255849 is about 1120.6466883010. The cubic root of 1255849 is about 107.8894902988.

It can be divided in two parts, 125584 and 9, that multiplied together give a triangular number (1130256 = T₁₅₀₃).

The spelling of 1255849 in words is "one million, two hundred fifty-five thousand, eight hundred forty-nine".